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    SubjectRe: [PATCH 0/3] Add API for weak DMA masks
    On Thu, May 01, 2008 at 04:38:15PM +0200, Michael Buesch wrote:
    > This patchset adds API and one user for a "weak" dma_set_mask().
    > Weak means that it will fallback to smaller masks in case the
    > DMA subsystem rejects a big mask.
    > Currently such rejection may happen if the driver requests a 64bit
    > mask on a VIA machine, for example. dma_set_mask_weak() will fallback
    > to 32bit, in that case, and tell the caller about it by modifying the
    > passed mask.

    Why do we need it? Is the call to set the 32bit mask when it fails
    a too big burden for the driver author?

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      Last update: 2008-05-01 17:39    [W:0.018 / U:10.824 seconds]
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